Improvement in spring bed-bottoms



UNITED STATES PATENT QFFIGE.

JOHN MENZIES, OF DETROIT, MICHIGAN.

IMPROVEMENT IN SPRING BED-BOTTOMS.

Specification forming part of Letters Patent No. lS3,956, dated October31, 1876; application filed August 19, 1876.

To all whom it may concern:

Be it known that I, JOHN MENZIES, of Detroit, in the county of Wayne andState of Michigan, have invented a new and valuable Improvement inSpring Bed-Bottoms; and I do hereby declare that the following is afull, clear, and exact description of the construction and operation ofthe same, reference being had to the annexed drawings, making a part ofthis specification, and to the letters and figures of reference markedthereon.

Figure l of the drawing is a representation of a plan view of my springbed-bottom, and Fig. 2 is a longitudinal vertical sectional viewthereof.

This invention relates to spring bed-bottoms; and it consists in thedevices hereinafter particularly set forth and claimed.

1n the annexed drawings, A A designate the longitudinal slats of thebed-bottom proper, and B B the cross-slats at the. head and foot, whichconnect and strengthen said longitudinal slats. There are two of thesecrossslats B at each end of the said bed-bottom. O designate thelongitudinal bars of a lower and stronger frame, which has at its endscross-bars D D, and across its middle part bars D. D. The connectionbetween said lower frame and the upper frame or bed-bottom proper ismade by means of a quadruple series of spiral supporting-springs, G G.The connection of said springs with the said lower frame is made bymeans of staples g, which are formed by driving the points of a bent roddown through cross-bar D or D, as the case may be, and then turning upsaid ends to make the said staple hold. The connection of said springswith the upper frame or bedbottom proper is made by means of bolts d andnuts 0. The upper end of the spring is in each case slipped in betweenone of the crossslats and one of the longitudinal slats of saidbed-bottom, and then the nut e is screwed home on the screw-threadedbolt d, which passes through said cross-slat and said longitudinal slat,and said slats are thus bound tightly together, clamping the upper endof said spiral spring between them. Across the bottom of the bed-bottomproper are arranged a double series of slat-sections, E E E E E and F FF F F which are attached to longitudinal slats A A as follows: Beginningon the right cross-section E is secured to the first three of saidlongitudinal slats, and section F is secured to the first two of saidslats. Crosssection F is secured to the third and fourth of said slatsA, and cross-section E to the fourth and fifth of said slats. Thisalternating arrangement continues across the bedbottom, though on theother side thereof F is secured to three longitudinal slats, and E toonly two. The object of said arrangement is to allow a certain amount ofvertical vibration to the center of said bed-bottom without affectingthe sides thereof. The number of said cross-sections will differ,according to the number of longitudinal slats in the bed-bottom. Eachcross-slat section is opposite to a vacant space in the other series,and all the longitudinal slats are connected, though irregularly, whichserves to brace each one against fracture.

I am aware that the cross-slats of a bedbottom supported by springs haveheretofore been tied together by means of long and short connections;and I am also aware that bandsupporters and cross-bands have heretoforebeen employed in connection with helical springs, support-bars, andslats; and I therefore lay no claim to such inventions.

What I claim as new, and desire to secure by Letters Patent, is-

The bed-bottom herein described, consisting of longitudinal slats A A,cross-slat sections E E F F and springs G, connected to the lower frameby staples, and to the upper frame by nuts and bolts, substantially asdescribed, and for the purpose set forth.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

JOHN MENZIES.

Witnesses:

J. F. HOBBES, J NO. B. GoRLIss.

